
Zero padding: put zeros for the surrounding of the feature maps;

Replicate padding: put the values of the border for the surrounding of the feature maps;

Reflective padding: reflect every feature map to its surrounding as if there was a mirror on each of the four borders;

Reflective-at-input paddingUsed in implementing the image stylization network in [1]}. See https://github.com/jcjohnson/fast-neural-style: same as reflective padding, but it is only used in the input image, while the convolutional layers do not use any padding.

